Plumbing fastener



FIG. 1 is a perspective view of a plumbing fastener showing my newdesign;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines immediately adjacent to the shaded area representunclaimed boundaries of the design. The broken lines showing theremainder of the plumbing fastener are for environmental purposes onlyand form no part of the claimed design.

CLAIM I claim the ornamental design for a plumbing fastener, as shownand described.